When sugar is added into water, a ……………. mixture is formed.

A compound is a substance which consists of …………………………. atoms.

The total number of protons and neutrons is the atomic ……………

Chemical reactions are the making or breaking of chemical ………… between atoms.

In the laboratory, a grinding mortar with a pestle are generally made of ……………….

All gases are completely …………… with each other, forming one phase.

The molecular weight is the sum of the atomic weights of all the ……….. in a molecule.

A chemical attraction between ions of opposite charge is called an …………. bond

The number of protons in the nucleus is the …………………. number.

………………. are two molecules with the same chemical formula but different structures and properties.

Perchloric acid is the name of:

A substance that is dissolved in another substance is called ………………

The smallest unit of any chemical element is called ................

A …………… is characterized both by a definite shape and definite size.

In the laboratory, a hood with suitable ventilation is used to remove harmful or undesirable ……………….

In an exchange reaction, two molecules are ………………., and their subunits are used to synthesize two new molecules.

The characteristic feature of gas is that its molecules are not held together, but move around …………………

Atoms consist of a ………………. which contains protons and neutrons. 

Exergonic reactions ……….. energy.

In a decomposition reaction, a large molecule is ......... into its component molecules, atoms, and ions.

An elementary substance is a substance, which consists of …………………. atoms.

In a ……………… bond, atoms share pairs of electrons.

Sodium sulfate is the name of:

The relationship between the mass of a substance and its size is called ...................

There are about ……. elements commonly found in living cells. 

The minimum energy of collision that can produce a chemical reaction is called its ……………. energy.

Which of the following is another term that can be used to describe a miscible liquid?

Atoms consist of a …………. , which contains protons and neutrons.

Endergonic reactions ……………. energy.

The number of chemical bonds an atom can form with other atoms is its …………..

The chemical properties of an atom are largely due to the number of electrons in its outermost ………...

1. A liquid has a definite …………., but does not have a definite ………….

Chemical elements are designated by letter abbreviations called chemical ……….

In a synthesis reaction, atoms, ions, or molecules are ………. to form a large molecule.

A gas does not possess either ……………. shape or size.

The bond between Na+ and Cl- in the salt molecule is called …………... bond. 

An ……………….. substance is a substance which consists of atoms of only one kind.

The Latin prefix “sesqui-” means: 

The products of reversible reactions can readily revert back to form the …………… reactants.